Review of week1

In week1 you completed the Accelerated Intro to CS on code.org.

What programming structures (or concepts) did you learn at http://code.org last week? (At least 5)

The students offered the following: k

Code a sequence of instructions to achieve a goal.
“Repeat” loop to repeat instructions a set number of times.
“While” loop to repate instructions while a test condition is true, e.g.
```
 while( pathAhead() )
     moveForward
     [do something]
```
“if” statement for conditional logic, so some instructions are executed only if a condition is true (or false).
```
 if( pathAhead() )
    moveForward
 else
    turn(left)
```

Define a function for a block of code that you can invoke from someplace else in your code. Functions make code modular and reusable. In the “artist” lesson you defined a square with size parameter:

 Function draw_a_square(size):
     repeat 4:
     do  move forward by size pixels
         turn right by 90 degrees

 # Elsewhere in the code, draw 2 squares, next to each other 
 draw_a_square(100)
 turn right 90 degrees
 move(100)
 turn left 90 degrees
 draw_a_square(50)